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电动车高速轮边减速器传动效率建模与分析
魏长旭1, 宋朝省1, 朱才朝1, 谈聪1, 郭万龙2
1.重庆大学 机械传动国家重点实验室, 重庆 400044;2.杭州前进齿轮箱集团股份有限公司, 杭州 311203
摘要:
以某电动车高速轮边减速器为研究对象,考虑齿轮啮合损失、搅油损失、风阻损失及轴承损失等因素,建立了该减速器的总效率计算模型,研究了工况参数和设计参数对减速器各种损失及总效率的影响规律。结果表明,随着工况参数转速、转矩、摩擦系数、齿高倍数和运动黏度的增大,系统效率均减小,其中转速、转矩和摩擦系数对总效率影响较大,齿高倍数和运动黏度对总效率的影响较小;减速器设计参数主动轮齿数和法面模数的变化均导致总效率先增加再减小,螺旋角的增加可明显提高系统效率。
关键词:  电动车  斜齿轮  动力传动  效率  功率损失
DOI:10.11835/j.issn.1000-582X.2019.04.001
分类号:TH132.413
基金项目:国家自然科学基金资助项目(51775061);重庆市基础与前沿研究计划(CSTC2016JCYJA0415),重庆市博士后科研项目特别资助(Xm2016004),中央高校基本业务费(2018CDQYJX0012)。
Modeling and analysis of transmission efficiency of high-speed wheel speed reducer for electric vehicles
WEI Changxu1, SONG Chaosheng1, ZHU Caichao1, TAN Cong1, GUO Wanlong2
1.State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, P. R. China;2.Hangzhou Advance Gearbox Group Co., Ltd., Hangzhou 311203, P. R. China
Abstract:
Taking the high-speed wheel reducer of an electric vehicle as the research object, the systematic efficiency model of the reducer was established considering the gear meshing loss, oil mixing loss, windage loss, bearing loss and other factors. Then, the influence of different operating parameters and design parameters on the various losses and total efficiency of the reducer were investigated. The results show that the system efficiency decreases with the increase of operating parameters of rotating speed, torque, friction coefficient, tooth height and kinematic viscosity. And the rotating speed, torque, and friction coefficient have an obvious influence on the systematic efficiency. But the tooth height multiple and kinematic viscosity have unsubstantial influence on the systematic efficiency. The increase of the pinion teeth number and normal module tends to increase the systematic efficiency first, and then decrease it. The increase of the helix angle can significantly increase the systematic efficiency.
Key words:  electric vehicles  helical gear  power transmission  efficiency  power loss
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